class People {
  float hello(int a,int b) {
    return a+b;
  }
  float hello(long a,int b) {
    return a-b;
  }
  double hello(double a,int b) {
    return a*b;
  }
}
public class Example4_12 {
   public static void main(String args[]) {
      People tom = new People();
      System.out.println(tom.hello(10,20));
      System.out.println(tom.hello(10L,20));
      System.out.println(tom.hello(10.0,20));
   }
}
